A cationic PAM tender should explain the required duty and approval process, not merely copy charge and molecular descriptors from an unfamiliar brochure. Product characteristics, batch documents and application performance answer different questions. Keep all three clear before asking suppliers for comparable offers.
Specify the sludge and machine duty
Provide residual source, feed-solids range, upstream treatment and the installed machine. Where several plants or duties are combined, state which require separate technical approval. Define the relevant capture, liquid-quality, cake and throughput endpoints. Avoid a universal dose guarantee across unspecified feeds. A successful tender gives suppliers enough information to propose a focused candidate range rather than reward whichever document uses the strongest-sounding grade description.
Make the trial method comparable
Require product identification and controlled preparation, including concentration, water and aging. Define how dose is normalized and how an incumbent reference is used. Record who evaluates the machine trial and releases the candidate. The sample and COA guide helps keep technical evidence interpretable. Supplier-described viscosity or molecular range should be compared only with its measurement conditions, not assumed equivalent by label alone.
Separate shipment conformity from application approval
Request the TDS, SDS and relevant batch document, explaining their intended roles. State lot marking, packaging and receiving requirements that preserve the qualified identity. A COA does not prove that every sludge will dewater successfully. Define how an unexpected lot or product change is handled before consumption. Use incoming-lot acceptance to organize proportionate checks without inventing a certificate or specification value.
Clarify commercial and change-control terms
State quantity, destination, package handling and requested delivery scope. Distinguish confirmed orders from forecasts and require agreement before product or form substitution. Binding contract wording and applicable procurement rules should be reviewed by the responsible commercial team. Technical guidance does not replace that review. Avoid unsupported factory-capacity, stock or lead-time claims in the tender; request supplier confirmation against the selected grade and actual shipment requirement.
Evidence needed before purchase
Record the actual observation or document reference against each item. If a condition was not tested, keep it visible as an approval limitation. Purchasing, operations and receiving should use the same candidate identifier so a favourable result is not transferred to a different product or unreviewed delivery.
| Decision | Evidence | Release condition |
|---|---|---|
| Duty and trial | Feed, machine, dose basis and acceptance process | Suppliers bid against a defined application |
| Shipment | Approved identity, documents and lot marking | Delivered material remains traceable |
| Commercial scope | Quantity, package, destination and change control | Offers can be compared without hidden assumptions |
Information to send with the quotation request
Provide the plant duties, current reference grades, acceptance measurements and trial responsibilities. Include the requested volume and destination separately from the technical approval. Identify any mandatory documentation or handling constraint as a requirement to confirm, not a claim that every quoted cationic product already satisfies it.
Include the required quantity, packaging method and destination with the technical evidence. Use the cationic PAM trial and RFQ route for a focused sample review, then confirm documents, packaging and supply scope for the approved product. Gongyi Xinqi Polymer Co., Ltd. can review the application and quotation requirements. Grade suitability, delivery availability and commercial terms need confirmation; no universal dose or guaranteed treatment outcome should be inferred from an application name.
Sample pathway
Send the feed condition and machine target.
A focused sample set starts with representative sludge, active dose, equipment and acceptance data.